Free · Instant · No Signup
10 Precision
Calculators
From sports performance to electrical engineering — every calculation you need, built to work flawlessly.
10Tools
FreeForever
0Signup
InstantResults
🎂
Half Birthday Calculator
Find the exact date exactly 6 months from any birthday
Half Birthday
—
—
Days Until
—
days away
Current Age
—
years old
💪
RPE Calculator
Rate of Perceived Exertion — estimate training load & 1RM from RPE
Est. 1RM
—
lbs
Intensity %
—
of 1RM
Reps Left
—
in reserve
🏀
Dunk Calculator
Find out how high you need to jump to dunk a basketball
Jump Needed
—
inches
Can You Dunk?
—
with avg vertical
Gap to Close
—
inches
✈️
Crosswind Calculator
Calculate crosswind & headwind components for aviation & meteorology
Crosswind
—
knots
Headwind
—
knots
Wind Angle
—
degrees off runway
⚡
Voltage Drop Calculator
Calculate voltage drop across wire runs for electrical installations
Voltage Drop
—
volts
Drop %
—
of source voltage
Receiving End V
—
volts
⚾
Batting Average Calculator
Calculate BA, OBP, SLG and OPS for any hitter
Batting Avg
—
BA
On-Base %
—
OBP
Slugging %
—
SLG
OPS
—
OBP + SLG
🥩
Protein Intake Calculator
Daily protein targets based on weight, goal & activity level
Min Protein
—
grams/day
Optimal
—
grams/day
Max Useful
—
grams/day
Per Meal (4×)
—
grams/meal
🏃
Running Pace Calculator
Calculate pace, finish time, or distance from any two known values
Pace
—
min/mile
Finish Time
—
hh:mm:ss
Speed
—
mph
Pace /km
—
min/km
🔥
TDEE Calculator
Total Daily Energy Expenditure — your complete calorie burn
BMR
—
cal/day (at rest)
TDEE
—
cal/day (maintenance)
Bulk (+250)
—
cal/day
Cut (−500)
—
cal/day
📉
Calorie Deficit Calculator
Calculate deficit, projected weight loss, and timeline to goal
Daily Deficit
—
calories/day
Loss/Week
—
lbs/week
Loss/Month
—
lbs/month
Goal In
—
weeks