// calculatorers.com
Every calculator,
one keypad away.
Pick a tool from the keypad below, type in your numbers, and get a straight answer — printed out like a receipt, nothing buried in ads.
60 calculators across 9 categories — all free, all instant.
Finance
13 tools
Loan EMI
₹/m
Monthly payment on any loan amount, rate and term.
Mortgage
⌂
Home loan payment, total interest and amortization.
Compound Interest
x²
Growth of savings or investments over time.
Simple Interest
%
Quick interest on principal, rate and time.
SIP Returns
↗
Future value of a recurring monthly investment.
GST
GST
Add or remove GST from any amount.
Income Tax Estimate
₹
Rough tax owed based on slab rates.
Tip
⊕
Split a bill and tip across any group size.
Discount
−%
Final price after one or more percentage discounts.
ROI
Δ
Return on investment as a percentage and multiple.
Arbitrage
⇌
Calculate profit from price differences across markets.
VAT
VAT
Add or remove VAT from any amount.
Car Payment
🚗
Monthly auto loan payment, total interest and payoff.
Math
10 tools
Percentage
%
Find a percent of a number, or what percent one is of another.
Fraction
½
Add, subtract, multiply or divide fractions.
Quadratic Equation
x²
Roots of ax² + bx + c = 0, step by step.
Average / Mean
x̄
Mean, median and mode of a list of numbers.
Standard Deviation
σ
Spread of a data set: variance and std. deviation.
Ratio
:
Simplify a ratio or scale it to a new total.
Log & Exponent
logₓ
Logarithms and powers in any base.
4th Root
⁴√
Calculate the fourth root of any number.
Triangle Calculator
△
Find missing sides, angles, area, and perimeter of a triangle.
Pythagorean Theorem
△
Find a missing side of a right triangle.
Health & Body
7 tools
BMI
BMI
Body mass index from height and weight.
BMR / Calories
kcal
Daily calorie needs at rest and by activity level.
Body Fat %
%
Estimated body fat using the U.S. Navy method.
Pregnancy Due Date
👶
Estimated due date from the last period.
Water Intake
💧
Recommended daily water based on body weight.
Calorie Deficit
↓
Daily calorie target to lose weight at a chosen rate.
Ovulation
🌙
Estimated fertile window based on cycle length.
Everyday
7 tools
Age
🎂
Exact age in years, months and days.
Date Difference
📅
Days, weeks or months between two dates.
Time Zone
🕒
Convert a time across two time zones.
Fuel Cost
⛽
Trip fuel cost from distance and mileage.
Time Card / Hours
⏱
Total work hours and pay from clock-in and clock-out times.
Age in Days
#
How many days old you are, down to the day.
FLAMES
❤️
Check relationship compatibility using the FLAMES game.
Education & Test Scores
8 tools
AP Lang Score
AP
Estimate your AP English Language & Composition score.
AP Bio Score
AP
Estimate your AP Biology exam score.
AP Chem Score
AP
Estimate your AP Chemistry exam score.
AP World History Score
AP
Estimate your AP World History exam score.
AP Calc AB Score
AP
Estimate your AP Calculus AB exam score.
Semester Grade
A+
Combine assignments, tests and finals into a final grade.
GPA
GPA
Calculate your grade point average from course grades and credits.
Grade Needed on Final
🎯
What score you need on the final to hit your target grade.
Home & DIY
6 tools
Pool Salt
🧂
How much salt to reach your target pool salinity.
Sand
▦
How much sand you need by volume and weight.
Boiler Feed Pump
♨
Required feed pump capacity for a steam boiler.
Paint Calculator
🎨
How many cans of paint you need for a room.
Concrete
▦
Concrete volume and bags needed for a slab or footing.
Tile
⬛
How many tiles you need for a floor or wall, with waste factor.