THE PASTEZAP TOOLKIT
Calculators & Converters
Convert amounts, units and dates with clearly explained results.
Choose from 66 focused tools. Each page shows supported formats, practical examples and input limits before you begin. No account is required.
66 tools in Calculators & Converters
Currency Exchange
Convert currencies with dated reference rates from official sources.
Numbers to Words
Convert numbers and currency amounts into words in multiple languages.
Unit Converter
Convert length, mass, temperature, area and volume between common units.
Aspect Ratio Calculator
Simplify image dimensions into an aspect ratio and calculate proportional sizes.
Percentage Calculator
Calculate a percentage, a share or a percentage change.
Discount Calculator
Apply one or several percentage discounts and see the total savings.
Sales Tax Calculator
Add or remove a user-entered sales tax or VAT rate.
Tip & Bill Splitter
Calculate a tip and split the total bill among a group.
Average Calculator
Find the mean, median, sum, minimum and maximum of a numeric list.
Fraction Calculator
Add, subtract, multiply or divide fractions and simplify exact results.
Data Size Converter
Convert bytes, bits, decimal storage units and binary storage units.
Download Time Calculator
Estimate transfer time from file size and connection speed.
Ratio Simplifier
Simplify an integer ratio and compare it to another ratio.
Random Number Generator
Generate random integers with optional sampling without replacement.
Random List Picker
Choose random list entries or shuffle entries into groups.
Roman Numeral Converter
Convert integers and strict canonical Roman numerals.
Permutation and Combination Calculator
Calculate exact ordered and unordered selections without replacement.
Quadratic Equation Solver
Solve quadratic or linear equations with real and complex roots.
Circle and Sector Calculator
Calculate circle and sector properties from radius, diameter, circumference or area.
Prime Checker and Factorization
Check primality and report exact prime factors within a bounded integer range.
Fibonacci Calculator
Calculate exact Fibonacci values, a bounded sequence or the index of an entered value.
Descriptive Statistics Calculator
Calculate mean, median, modes, interpolated quartiles, variance and standard deviation.
Triangle Solver
Solve SSS, SAS, ASA and ambiguous SSA triangles with area and perimeter.
Fuel Economy Converter
Convert fuel consumption and efficiency using US or Imperial gallons.
Weighted GPA Calculator
Calculate a credit-weighted average using an editable institutional grade scale.
Pressure Converter
Convert pressure quantities between explicitly defined units.
Energy Converter
Convert energy quantities between explicitly defined units.
Angle Converter
Convert angle quantities between explicitly defined units.
Loan EMI Calculator
Calculate fixed-rate monthly payments, extra-payment payoff and total interest.
Amortization Schedule Generator
Download a monthly principal, interest and balance schedule.
Auto Loan Calculator
Model vehicle financing with down payment, fees, trade-in balance and price tax.
Credit Card Payoff Calculator
Estimate payoff with a fixed monthly payment and no additional spending.
Mortgage Cost Calculator
Model principal, interest, fixed taxes, insurance, HOA and simplified PMI.
Refinance Comparison Calculator
Compare remaining and replacement loan payments, costs and interest.
Home Affordability Scenario Calculator
Model a purchase budget from a selected debt ratio, income and fixed expenses.
Compound Interest Projection
Project initial savings and monthly contributions with explicit compounding.
Monthly Investment Projection
Project recurring investments and show the balance curve.
Fixed Deposit Projection
Project a fixed deposit using a user-selected rate and compounding frequency.
Recurring Deposit Projection
Project regular monthly deposits under an explicit compounding assumption.
Savings Goal Calculator
Calculate the end-of-month contribution needed to reach a stated savings target.
Return on Investment Calculator
Calculate net profit, simple ROI and a terminal-value annualized return.
Profit Margin and Markup Calculator
Distinguish margin on selling price from markup on cost.
Gross Salary Converter
Convert gross pay using explicit working hours and weeks.
Inflation Scenario Calculator
Estimate equivalent future cost and purchasing power using a supplied fixed rate.
Retirement Contributions Projection
Project salary-based monthly saving and a configurable employer match.
India PPF Projection
Model annual deposits before April 5 at an illustrative fixed rate.
India HRA Exemption Calculator
Apply the basic old-regime HRA minimum-of-three calculation.
Debt Snowball and Avalanche Planner
Simulate minimum payments and roll extra budget into balance- or rate-prioritized debt.
Adult BMI Calculator
Calculate adult BMI with metric or imperial measurements and CDC screening categories.
Adult BMI Weight Reference
Convert the adult BMI reference interval to a weight range for a supplied height.
TDEE Estimate Calculator
Estimate resting and total energy using Mifflin-St Jeor and a selected activity factor.
Macronutrient Energy Calculator
Convert an entered calorie goal and protein, carbohydrate and fat percentages into grams.
Circumference Body Fat Estimate
Apply historical circumference equations after converting measurements to inches.
Waist to Height Ratio
Divide waist measurement by height using matching units.
Waist to Hip Ratio
Divide waist circumference by hip circumference using matching units.
Lean Mass from Body Fat
Calculate lean and fat mass from weight and a supplied body-fat percentage.
Energy Balance Calculator
Compare supplied intake and expenditure without prescribing a diet.
Heart Rate Reserve Calculator
Calculate a target interval from supplied maximum/resting heart rate and intensity percentages.
Running Pace Calculator
Convert elapsed time and distance to average pace and speed.
Cooper Test VOโ Max Estimate
Estimate oxygen uptake from an already completed 12-minute test distance.
Pregnancy Due Date Estimate
Estimate an LMP-based due date with an explicit cycle-length adjustment.
Calendar Ovulation Estimate
Model cycle dates using entered cycle and luteal lengths.
Sleep Cycle Time Scenarios
Calculate civil-clock scenarios from an assumed cycle duration and latency.
Water Intake Goal Tracker
Calculate remaining fluid and servings toward your own entered daily goal.
Words to Number Converter
Recognize bounded cardinal number phrases in eleven languages.
Tic-Tac-Toe
Play against an optimal computer or a second person on the same device.