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💰 Finance & moneyFree
Nominal to Real Wage CPI Calculator
Restate a wage in the buying power of another period: a wage of 30 when the CPI is 125 equals a real wage of 24 at a reference CPI of 100, an adjustment of…
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💰 Finance & moneyFree
Okun's law output gap calculator
Estimate how far output sits from potential using unemployment: with unemployment at 6.5% against a natural rate of 4.5% and a coefficient of 2, output is about…
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💰 Finance & moneyFree
Opportunity cost ratio calculator
Read the trade-off between two goods from a production possibilities table: moving from 0 X and 100 Y to 10 X and 80 Y costs 2 units of Y per extra X, or 0.5 X…
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Optimal Consumption Calculator
Test whether spending is balanced between two goods: marginal utilities of 18 and 6 against prices of 10 and 5 give an MRS of 3 versus a price ratio of 2, so…
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💰 Finance & moneyFree
Output Gap Calculator
Compare actual GDP with potential GDP: actual output of 1020 against potential of 1000 is a gap of 20, or 2% above capacity, an inflationary gap.
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💰 Finance & moneyFree
Payoff Matrix Expected Value Calculator for Mixed Strategies
Against an opponent who mixes three actions, the strategy paying −1, 5 and 4 averages 3.5, ahead of 2.3 and 1.4 for the other two.
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💰 Finance & moneyFree
Third-Degree Price Discrimination Calculator
With a marginal cost of 20, the market with elasticity −2 gets a price of 40 and the one with −4 gets a lower price: the less elastic market always pays more.
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💰 Finance & moneyFree
Price elasticity of demand midpoint calculator
When the price rises from 10 to 12 and the quantity bought falls from 100 to 80, the midpoint method gives an absolute elasticity above 1, so demand is elastic.
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💰 Finance & moneyFree
Price Floor Surplus Calculator
With equilibrium at a price of 30, a floor of 40 cuts purchases to 20 units while sellers offer 50, leaving a surplus of 30 units.
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💰 Finance & moneyFree
Quantity supplied from a linear supply function calculator
With an intercept of −20 and a slope of 4, a price of 15 gives a quantity supplied of 40. Enter the two numbers of your supply line and one price; a result…
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Quantity theory of money calculator
With money of 1000 turning over 5 times and a price level of 2, real output must be 2500, because MV = PQ.
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💰 Finance & moneyFree
Quintile Income Share Ratio Calculator (S80/S20)
If the richest fifth receives 45.2% of income and the poorest fifth 7.8%, the S80/S20 ratio is about 5.8: the top group gets 5.8 times the bottom group's share.
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💰 Finance & moneyFree
Real exchange rate calculator
A nominal rate of 20 with domestic prices at 100 and foreign prices at 120 gives a real exchange rate of 24, because foreign goods cost relatively more.
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💰 Finance & moneyFree
Required Reserves Calculator
With 1,250,000 in reservable deposits and an 8.5% requirement, a bank must hold 106,250; holding 150,000 leaves 43,750 in excess reserves available to lend.
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💰 Finance & moneyFree
Second-price auction calculator
With bids of 100, 95 and 80, the bidder at 100 wins but pays only 95, the second-highest bid, keeping a surplus of 5.
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💰 Finance & moneyFree
Two-Player Shapley Value Calculator
If one player makes 40 alone, the other 60, and together they create 140, the Shapley value assigns 60 and 80: each keeps their standalone value plus half of…
K
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💰 Finance & moneyFree
Subsidy incidence calculator
A subsidy of 10 per unit with demand elasticity 0.5 and supply elasticity 1.5 goes 75% to buyers (7.5) and 25% to sellers (2.5), no matter who receives the…
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💰 Finance & moneyFree
Per-Unit Subsidy Market Effect Calculator
With a subsidy of 9 per unit, quantity rises from 40 to 46, buyers pay 27 instead of 30, sellers receive 36, and the government spends 414 in total.
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💰 Finance & moneyFree
Supply schedule table from linear supply function
With supply starting at 0 and rising by 2 units per unit of price, prices from 0 to 10 in steps of 2 give quantities 0, 4, 8, 12, 16 and 20.
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Supply Shift New Equilibrium Calculator
A rightward supply shift of 25 units moves the market from a price of 20 and a quantity of 80 to a price of 15 and a quantity of 90, with demand held fixed.
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💰 Finance & moneyFree
Tariff Consumer Surplus Loss Calculator
When a tariff lifts the price from 20 to 26 and purchases fall from 1000 to 760, consumers lose 5280: 4560 paid extra on the units they still buy and 720 on the…
B
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💰 Finance & moneyFree
Tariff Revenue Calculator
A tariff of 8 per item on 5000 imports, with 250 fewer items imported for each unit of price rise, cuts imports by 2000 and collects 24000 on the 3000 that…
K
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💰 Finance & moneyFree
Theil index calculator
Four unequal incomes totalling 100, with a mean of 25, give a Theil index that is positive but far below its ceiling for four people: inequality exists, yet it…
S
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💰 Finance & moneyFree
Total market surplus calculator
With demand starting at a price of 100 and falling by 2 per unit, and supply starting at 20 and rising by 3, the market clears at 16 units and a price of 68…
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💰 Finance & moneyFree
Consumption beyond PPF from trade
A country that can make 100 units of X or 50 of Y specializes in X, trades at 1 Y per X and consumes 50 of each good, a bundle outside its own production…
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💰 Finance & moneyFree
Value of Marginal Product of Labor Calculator
If one more hour of work produces 8 items that sell for 15 each, its value of marginal product is 120; at a labor cost of 100, that hour adds 20, so the signal…
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💰 Finance & moneyFree
Zero-Sum Game Value Calculator
Enter the four payoffs of a 2x2 zero-sum game and get its value: the matrix 3, -1 / 0, 2 is worth 1 to the row player, who should pick the second row twice as…
B
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🎓 EducationFree
Average of grades calculator
Grades of 80, 90 and 100 average 90, from a total of 270 over 3 scores. Paste one student's results or a whole quiz, choose the decimals, and every grade counts…
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🎓 EducationFree
CEFR vocabulary target
Find out how many new words stand between your CEFR level and the one you are aiming for: moving from A2 to B2 means 3,000 new words, from 1,000 to 4,000 on a…
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🎓 EducationFree
Citation Density Calculator
Find out how many citations your paper carries per 1,000 words: 3 citations in a 34-word passage come to 88.235, above a range of 20 to 80.
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🎓 EducationFree
Class exam average calculator
Paste the exam scores of a class and get the mean, the highest, the lowest and the range in one step: five scores running from 68 up to 91 average 78.6, a range…
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🎓 EducationFree
Cosine Text Similarity Calculator
Score how closely two passages use the same words, from 0 when they share none to 1 when their word patterns match.
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🎓 EducationFree
Course load weekly hours
Add up the real weekly cost of your timetable: class contact hours plus your own study hours for every course.
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🎓 EducationFree
Current Grade Percentage Calculator
See your grade so far from graded work only: 18 out of 20 on a quiz and 42 out of 50 on an essay make 60 of 70 points, or 85.71%, while the ungraded project…
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🎓 EducationFree
Daily study hours for goal
Turn a study-hour goal and a deadline into a daily pace: 40 hours of review with 10 days left means 4 hours a day, or 28 hours across a full week.
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🎓 EducationFree
Debate speaking time split
Turn a debate format into minutes for every speech: a standard policy round runs 64 minutes, 32 for constructives, 20 for rebuttals and 12 for…
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🎓 EducationFree
Direct Proportion Solver
Find the missing term of a proportion and see it checked: in 3/5 = 12/x the missing value is 20, and both cross products come to 60.
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🎓 EducationFree
Effective reading rate with comprehension
Fold comprehension into reading speed: 250 words per minute with 80% of the quiz right counts as 200 effective words per minute, so racing without understanding…
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🎓 EducationFree
Essay Completion Percentage Calculator
Turn a vague draft into a clear number: 1,250 words against a 2,000-word target is 62.5% complete, with 750 words and 37.5% still to write.
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🎓 EducationFree
Exam Pass Threshold Checker
Check a raw score against the passing mark in one step: 72 out of 100 with a cutoff of 70 passes by 2 points, and both the score and the cutoff are shown as…
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🎓 EducationFree
Exam Prep Timeline Builder
Spread every topic session between today and the day before the test: three topics needing 7 sessions over a 7-day countdown get one interleaved session a day…
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🎓 EducationFree
Exam topics coverage
See how much of the syllabus you have covered: 18 topics done out of 24 is 75% coverage, with 6 topics and 25% still to go. Free in your browser.
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🎓 EducationFree
Exponent power calculator
Raise a number to any whole exponent and see the working: 2 to the 5th is 2 × 2 × 2 × 2 × 2, which is 32, and a negative exponent comes out as a fraction.
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🎓 EducationFree
Daily flashcard review load calculator
See how much flashcard work today really holds: 20 new cards at 3 repetitions each plus 180 due reviews make 240 repetitions, about 32 minutes at 8 seconds…
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🎓 EducationFree
Flat Bump Grade Curve Calculator
Apply a curve that adds a fixed bump but guarantees a floor: a 67 plus 5 points is 72, still below the 75 floor, so the student gets 75, an increase of 8.
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🎓 EducationFree
Simplify fraction to lowest terms
Enter a numerator and a denominator and get the fraction in lowest terms, plus the factor that was cancelled: 12/18 becomes 2/3 after dividing both parts by 6.
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🎓 EducationFree
GPA 10 to 4 point converter
Turn a 10-point CGPA into a 4-point US GPA by multiplying by 0.4: an 8.5 becomes a 3.4. The rule keeps your relative position on both scales, so a perfect 10…
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🎓 EducationFree
GPA after dropping a course
See what your GPA becomes after dropping one course: with a 3.5 over 60 credits, withdrawing from a 3-credit C leaves 204 quality points over 57 credits, a new…
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🎓 EducationFree
GPA from letter grades calculator
Turn letter grades and credit hours into a credit-weighted GPA on the 4.0 scale: an A in 3 credits, a B+ in 4 and a C- in 2 add up to 28.6 quality points over 9…
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🎓 EducationFree
GPA to India percentage converter for applications
A CGPA of 8.2 out of 10 becomes 77.9% with the 9.5 multiplier. Enter the grade from your transcript, pick its scale and the method the university or employer…
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🎓 EducationFree
GPA to percentage converter
A 3.5 GPA on the 4.0 scale works out to about 87.5%: divide by 4 and multiply by 100. Useful when a scholarship form, an employer or a university abroad asks…
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🎓 EducationFree
Grade from number of errors
Three errors on a 25-question quiz leave 22 correct, which is 88% and a B. Enter the total and the number wrong, and you get the correct count, the percentage…
B
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🎓 EducationFree
Grade percentage from fraction
17 correct out of 20 is 85%, a B in the 83–86% band. Type the points earned and the points possible, even with half points of partial credit, and get the…
A
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🎓 EducationFree
Possible final grade range
Scores of 82 and 91 on work worth 20 and 30, with half the course left, put your final grade anywhere between 43.7 and 93.7.
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🎓 EducationFree
GRE Total Score Combiner
A Verbal score of 158 and a Quantitative score of 164 add up to a combined GRE total of 322, while Analytical Writing, such as a 4.5, stays beside it on its own…
B
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🎓 EducationFree
Lexical Density Calculator
Paste an English passage and see what share of its words carry meaning: in a 12-word sentence about students examining an ancient map, 8 are content words, a…
K
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🎓 EducationFree
Linear grade curve calculator
Give every student the same 5 bonus points after a hard exam and watch the class mean move, from 79 to 84 in the worked example.
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🎓 EducationFree
Minimum passing grade calculator
With 60% of the course graded at an average of 78.92 and a final worth 40%, you need 56.63 on the final to finish at 70.
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🎓 EducationFree
Mixed number to improper fraction
3 1/2 becomes 7/2: multiply the whole part by the denominator, add the numerator and keep the denominator.
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🎓 EducationFree
MLA format pages estimator
In the usual MLA layout, Times New Roman 12, double spacing and one-inch margins, about 250 words fill a page, so a 1,250-word draft comes to 5 pages.
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2
Call the endpoint
One authenticated POST. The API returns a task_id immediately — copy-paste snippets in five languages on every page.
3
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Receive a signed webhook the moment it's ready, or fetch a signed link. A failed task is never charged.
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