Free Online Calculators & Tools

Calculators, converters, counters, and estimators for finance, education, business, and everyday life.

Calculate the minimum number of votes needed for a valid decision in meetings and organizations.

Measure and analyze your productivity score based on tasks completed and time spent.

Estimate the amount of alcohol needed for your wedding or event based on guest count.

Calculate your SHSAT scaled score and percentile ranking for NYC specialized high schools.

Calculate option prices using the Black-Scholes model for financial analysis.

Calculate your bowling handicap score to level the playing field in competitions.