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✍️ Text & AIFree
Longest Common Suffix Finder for Lines of Text
report-final.csv, backup-final.csv and export-final.csv share the ending -final.csv, 10 characters long, not just the .csv extension.
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✍️ Text & AIFree
Check If Text Contains a Substring and Find Its Position
Look for passed in Release candidate passed validation and the answer is yes, first found at position 18, counting from 0.
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✍️ Text & AIFree
Prevent text widows with a non-breaking space
Keep the last two words of each paragraph on the same line: in a two-paragraph sample, both endings get a non-breaking space, so careful details and narrow…
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✍️ Text & AIFree
Pixels to em units
Convert a pixel size into em: 24 px inside a 16 px parent is 1.5 em, ready to paste as 1.5em. Text and spacing then grow with the parent font size and with the…
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✍️ Text & AIFree
Pixels to percent font size converter
Turn a pixel font size into a percentage of its parent: an 18-pixel child inside a 16-pixel parent becomes 112.5 %, ready to paste into a stylesheet.
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✍️ Text & AIFree
Pixels to points converter
Turn screen pixel sizes into print points: at the web standard of 96 DPI, 16 px becomes 12 pt, each pixel worth three quarters of a point.
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✍️ Text & AIFree
Anagram signature key
«listen» and «silent» both become eilnst: the letters sorted into one fixed order, so every rearrangement of a word shares the same key.
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✍️ Text & AIFree
Count list items
apples, bananas, an empty row and cherries make 3 items, even though the paste spans 5 lines: blank spacer rows are skipped by default.
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✍️ Text & AIFree
Extract CSV column
Ask for the email column of a name, email and role table and get ada@example.com and bob@example.com, in order, without the header.
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✍️ Text & AIFree
Escape a CSV field
A value like Quarterly report, "final" becomes "Quarterly report, ""final""", so its comma stays inside one column and its quotes survive.
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✍️ Text & AIFree
Golden ratio type scale generator from any base font size
From a 16 px base, three steps up give 25.89, 41.89 and 67.78 px, and two steps down give 9.89 and 6.11 px, each one phi times its smaller neighbour.
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✍️ Text & AIFree
Leading from font size and ratio
Body text at 16 px with a 1.5 ratio needs 24 px from one baseline to the next. You also get the space beyond the type size and its half, ready for mockups…
A
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✍️ Text & AIFree
Convert lines to a JSON array
Paste five lines, including a Windows path and a line with quotes, and get a valid array of 5 quoted values: C:\data\file.txt comes out as "C:\\data\\file.txt"…
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✍️ Text & AIFree
Intersection of two lists
Paste two lists and keep only what they share: analytics, email, seo, analytics, automation against seo, content, analytics, social gives analytics and seo…
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✍️ Text & AIFree
Lines to numbered Markdown list
Turn separate lines into a numbered Markdown list: Install the dependencies, Configure the environment and Run the test suite become steps 1 to 3, word for…
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✍️ Text & AIFree
Remove Unicode variation selectors
Hello ❤️ world ☺️ loses its 2 hidden selectors and comes back as Hello ❤ world ☺, 15 characters instead of 17.
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✍️ Text & AIFree
Count duplicate list items
In apple, banana, apple, cherry, banana, apple there are 6 items, 3 unique values and 3 extra copies: apple appears 3 times and banana twice.
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✍️ Text & AIFree
Enumerate a list with indexes
Turn red, green and blue into 0: red, 1: green and 2: blue, or start at 1 for human readers. Order, repeated entries and blank ones stay exactly as they were…
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🧭 Travel & geographyFree
Effective average speed with stops
Driving 120 km at 90 km/h with half an hour of stops takes 1.833 hours door to door, so your effective average is roughly sixty-five km/h, not 90.
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🧭 Travel & geographyFree
Departure time calculator for a target arrival
To arrive at 17:30 after a 180 km drive at an average of 90 km/h, leave at 15:30: the calculator works backward from your deadline and tells you when departure…
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🧭 Travel & geographyFree
Safe following distance calculator
At 100 km/h, a two-second gap means 55.56 metres to the vehicle ahead, and three seconds about 83.33 metres.
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🧭 Travel & geographyFree
Compare two driving routes
Route A, 120 miles at 60 mph, takes 2 hours and 14 in fuel; route B, 100 miles at 45 mph, burns less but takes longer.
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🧭 Travel & geographyFree
Road trip toll cost estimator with transponder discount
Estimate the toll line of a road trip budget: 8 segments at one charge each, minus a 15% transponder discount, give the subtotal, the savings and the total, in…
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Runs in your browser
🧭 Travel & geographyFree
Car lease monthly payment calculator
With a money factor of 0.0021 over 36 months, see your lease payment split into its two parts: the depreciation charge and the finance charge.
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🧭 Travel & geographyFree
Fuel consumption from fill-up calculator
Drive 450 km between two full tanks, put 36 litres back in, and your real consumption is 8 L/100 km, or 12.5 km per litre.
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🧭 Travel & geographyFree
MPG upgrade fuel savings calculator
Going from 25 to 35 mpg over 12,000 miles a year cuts fuel use from 480 to 342.857 gallons, a 28.57 % drop.
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🧭 Travel & geographyFree
Multi-stop route total distance
New York–Philadelphia 120 km, Washington 140 km and Richmond 110 km add up to 370 km, with running totals of 120, 260 and 370 km.
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🧭 Travel & geographyFree
Quarter-mile time estimate
A 3,500-pound car with 300 horsepower should run the quarter mile in just over 13 seconds with a trap speed of about 103 mph.
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🧭 Travel & geographyFree
Tire revolutions per mile calculator
A 225/65R17 tire turns 707.26 times per mile and 439.47 times per kilometer, with an overall diameter of 724.3 mm.
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🧭 Travel & geographyFree
Torque to horsepower calculator
300 lb-ft at 5252 RPM is exactly 300 horsepower, because the formula multiplies torque by RPM and divides by 5252.
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🧭 Travel & geographyFree
Trip fuel cost per mile calculator
Enter what a finished trip really cost in fuel and the 500 miles (804.672 km) you drove, and get the cost per mile and per kilometer for your expense records or…
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🧭 Travel & geographyFree
Vehicle speed from RPM calculator
At 6,000 rpm in a 1.0 top gear with a 3.73 final drive and 650 mm tires, the car does 197.08651 km/h in theory.
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🧭 Travel & geographyFree
Wheel offset and backspacing calculator for rim fitment
An 8.5-inch wheel with a +35 mm offset has 6.128 inches of backspacing and 3.372 inches of frontspacing.
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🧭 Travel & geographyFree
Cold-start warm-up fuel calculator
Five minutes of cold-start idling at 1.2 litres per hour burns 0.1 litre of fuel: the warm-up burn rate multiplied by the idling time in hours, in litres…
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Runs in your browser
🧭 Travel & geographyFree
EV Battery Degradation Calculator
Enter a 75 kWh battery, a 2.3% loss a year and 8 years of use to see how many kilowatt-hours and how much of a 480 km range remain, with each year's loss taken…
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🧭 Travel & geographyFree
EV vs gas break-even calculator
Compare a 30 MPG gas car with an EV using 30 kWh per 100 miles: enter both prices and energy rates, and see how many miles, and at 12,000 miles a year how many…
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Runs in your browser
🧭 Travel & geographyFree
EV home vs public charging cost calculator
Multiply a 75 kWh battery by your home rate and by the public charger's rate to see what a full charge costs at each, the gap between them, the cheaper source…
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🧭 Travel & geographyFree
EV range from battery and efficiency calculator
With 72 kWh of usable battery and 180 Wh per mile, an electric car travels 400 miles. Enter the energy you can really use, say whether consumption is per mile…
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Runs in your browser
🧭 Travel & geographyFree
Speed at redline per gear calculator
With a 6,500 rpm redline, a 3.73 final drive and 650 mm tyres, a sixth gear of 0.7 tops out at a theoretical 305.014836 km/h.
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🧭 Travel & geographyFree
Tire tread life calculator
With 6 mm of tread, a 1.6 mm wear-out limit and a measured wear of 0.0004 mm per mile, you have 4.4 mm and 11,000 miles left.
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🧭 Travel & geographyFree
Towing and payload capacity calculator
A vehicle rated to tow 6,500 lb pulls a 5,100 lb trailer with 1,400 lb to spare, yet only 500 lb of its 1,800 lb carrying capacity is left once tongue weight…
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Runs in your browser
🧭 Travel & geographyFree
Aircraft endurance calculator
With 180 US gallons of usable fuel burning 48 gallons an hour and a 45-minute reserve, you have 3 hours of flight endurance, 3.75 hours in total.
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🧭 Travel & geographyFree
Aircraft fuel burn calculator
A 2.5-hour flight burning 48 US gallons an hour needs 120 gallons of trip fuel, plus 36 for a 45-minute reserve: 156 in total, with 3.25 hours of endurance.
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🧭 Travel & geographyFree
EV fast charge time with taper
Charging a 75 kWh pack from 10% to 80% at 150 kW takes 21 minutes, because that band stays below the taper; go past 80% and the calculator adds the minutes lost…
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Runs in your browser
🧭 Travel & geographyFree
EV time to full charge calculator
A 75 kWh pack at 20 % on a 50 kW charger needs about 100 minutes to reach full: one hour at peak power, then a slower final stretch above 80 %.
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🧭 Travel & geographyFree
Required Rate of Climb Calculator
At 120 knots over the ground, a 3.3% climb gradient demands just over 2 metres per second of vertical speed.
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🧭 Travel & geographyFree
Runway wind components calculator
A 20-knot wind from 240 degrees on runway heading 270 arrives 30 degrees off the nose from the left, giving 10 knots of crosswind plus a headwind.
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🧭 Travel & geographyFree
Top of descent calculator
From 35,000 ft down to 3,000 ft on a 3° path at 280 knots, start descending about 100 nautical miles out and you level off in 21 min 32 s.
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🧭 Travel & geographyFree
True airspeed from indicated airspeed calculator
At 120 knots indicated, 8,000 ft pressure altitude and 5 °C, true airspeed comes out at an estimated 140.93 knots, since air 6 °C warmer than standard lifts…
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🧭 Travel & geographyFree
Aircraft weight and balance calculator
Empty weight, front seats, fuel and baggage add up to 2,130 lb and a moment of 186,200, which puts the CG inside an 82 to 95.5 envelope and under a 2,550 lb…
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🧭 Travel & geographyFree
Boat fuel consumption calculator
A 90-nautical-mile run at 18 knots takes five hours, so engines burning 12.5 litres an hour use 62.5 litres, also shown as 16.511 US gallons and 13.748 imperial…
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🧭 Travel & geographyFree
Total flight time with layovers calculator
A 150-minute flight, a 75-minute connection and a 210-minute flight add up to 7 h 15 min of travel, of which 6 h are in the air.
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🧭 Travel & geographyFree
True ground track from heading calculator
Heading 90° at 120 knots with wind from 270° at 30 knots gives a ground track of 90° and a ground speed of 150 knots.
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🧭 Travel & geographyFree
Lighthouse geographic range calculator
A light 40 m above the sea, seen from an eye height of 2 m, first rises over the horizon at about 14.9 nautical miles.
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🧭 Travel & geographyFree
Speed Over Ground with Current Calculator
A boat making 6 knots due east through a 2-knot current setting south moves over the ground at 6.324555 knots, on a course a little south of east.
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🧭 Travel & geographyFree
TAS from Mach and temperature calculator
Mach 0.82 at minus 56.5 °C is about 470 knots true, because the speed of sound in that cold air is only around 295 m/s.
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🧭 Travel & geographyFree
Tide Height Rule of Twelfths Calculator
With high water of 5.8 at 06:00 and low water of 1 at 12:00, the falling tide stands at 4 by 08:30, four and a half twelfths of the range later.
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🧭 Travel & geographyFree
Altitude sickness risk calculator
Sleeping at 3,500 m after starting at 1,200 m, with a 2-day ascent and a previous bout of AMS, rates as very high risk: 1,150 m gained per day, with at least 5…
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🧭 Travel & geographyFree
Excess baggage fee calculator
A 27.5 kg suitcase on a 23 kg allowance is 4.5 kg over, and the calculator prices that excess per kilogram or as one fixed overweight fee, so you can decide…
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🧭 Travel & geographyFree
Beaufort wind scale calculator
Enter 18 knots and you get Beaufort force 5, a fresh breeze with moderate waves, many whitecaps and some spray, worded the way marine forecasts and logbooks say…
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How it works
1
Get your key
Create an account with your email and add balance when you need it. No subscription, no sales call.
2
Call the endpoint
One authenticated POST. The API returns a task_id immediately — copy-paste snippets in five languages on every page.
3
Collect the result
Receive a signed webhook the moment it's ready, or fetch a signed link. A failed task is never charged.
Pay only for what you use
No subscription. Free tools run in your browser; paid tasks draw from your balance, which never expires.
Free tools
$0.00
On-device utilities — hash, QR, JSON, Text→PDF and more — run in your browser. No account, no limits.
Pay-as-you-go
Per task
$0.002+
The full API — 7800+ capabilities — billed only for what you run, from $0.002 per call. No monthly fee.
Balance
$10.00+
Top up your balance and spend it across web, API and the app. It never expires.