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Use our free formula solver to solve common formulas for any unknown variable. Choose from distance-rate-time, Ohm's law (V=IR), Newton's second law (F=ma), simple interest (I=Prt), kinetic energy (KE=½mv²), and electrical power (P=VI). Enter known values and select which variable to solve for.
Solve common formulas for any unknown variable. Choose from 6 formulas: distance-rate-time (d=rt), Ohm's law (V=IR), Newton's second law (F=ma), electrical power (P=VI), simple interest (I=Prt), and kinetic energy (KE=½mv²). Enter known values, select the variable to solve for, and get the result.
Select a formula, enter known values, solve for the unknownPercentage: The percentage value you want to apply
Number: The original number or value
Result: The calculated result
Result: 100
CalculateMe Team
Last updated: 2026-07-15