How to use the transpiration rate calculator
Compute water loss per leaf area over time. Enter water lost, leaf area, time in the fields above; the transpiration rate, rate are computed instantly and plotted on the chart so you can see how the answer changes.
Formula
Variables
- v — Water lost (mL)
- A — Leaf area (cm²)
- t — Time (h)
Worked example
With water lost = 2.4 mL, leaf area = 120 cm², time = 3 h, the calculator gives transpiration rate ≈ 0.00666667 mL/(cm²·h); rate ≈ 0.8 mL/h.
Frequently asked questions
What is the formula for the transpiration rate calculation?
Transpiration rate (mL/(cm²·h)) = v / A / t. Rate (mL/h) = v / t. Here v is water lost (mL), A is leaf area (cm²), t is time (h).
What inputs do I need for the transpiration rate calculator?
You need water lost in mL, leaf area in cm², time in h. Each field is pre-filled with a typical example so you can see how the result responds as you edit the numbers.
How do I use this calculator?
Type values into the input fields. Results and the chart update instantly. Use Reset to restore the example values, Copy results to paste them elsewhere, or Share to copy a link that preserves your inputs.
Is the result exact?
Calculations use standard formulas and double-precision arithmetic, then display about seven significant figures. Real-world measurements carry uncertainty, so treat results as estimates unless your inputs are exact.