CalcCraft
Online calculators with shareable links and clear explanations.
Pick a calculator below - the rest are coming soon.
Available
Mortgage / Amortization
Payment, schedule, charts.
Tip & Split
Bill split with presets.
APR ↔︎ APY
Nominal vs effective rate.
Unit Converter
Length, mass, temp, more.
Currency Converter
Fiat & Crypto.
BMI Calculator
Metric & imperial.
GPA Calculator
Weighted & unweighted.
Loan Payoff
Snowball vs avalanche.
Discount Calculator
Percent off, final price.
Percentage Calculator
Find % of a number.
Date Difference
Days between dates.
Speed / Fuel Efficiency
MPG, L/100km, speed.
Temperature Conversions
Celsius, Fahrenheit, Kelvin.
Coming Soon
RoadmapROI / Break‑even
Profitability quick check.
Inflation / Future Value
Buying power over time.
Mortgage vs. Rent
Compare home buying vs renting.
Tax Estimator
Simple yearly tax estimate.
Retirement Savings
How much you'll need & have.
Net Present Value
PV of cash flows.
Simple Interest
Quick interest calculation.
Investment Growth / CAGR
Compound annual growth rate.
Age Calculator
Exact age from date of birth.
Time Duration
Add/subtract HH:MM:SS.
Area & Volume
Area & volume conversions.
Energy / Work / Power
Physics basics.
Pressure / Density
Unit conversions & formulas.
Shape Calculators
Circle, triangle, cylinder.
Geometry Formulas
Perimeter, area formulas.
Percentile / Percent Change
Rank & change over time.
Probability Basics
nCr, permutations.
Random Generator
Number, name picker.
Dice Roller / Coin Flip
Roll dice or flip coins.
Countdown Timer
Timer with alerts.
Factorial / Permutations
n! and arrangements.
Quadratic Formula
Solve ax²+bx+c=0.
Prime Number Checker
Is it prime?
Fractions to Decimal
Convert between forms.
Algebra Solver
Solve simple linear eqs.
Roots & Radicals
Square & n-th roots.
Scientific Notation
Convert to/from sci. notation.
Logarithm & Exponents
Base logs & powers.
Ideal Weight / Body Fat
Simple healthy ranges.
Loan Affordability
Max you can borrow.
Calories & Cooking Conversions
Nutrition & kitchen units.
Depreciation
Straight-line method.
Currency Appreciation
Value change over time.