📐 Tolerances & Fits
Tolerances & Fits Calculators
ISO tolerance grades, fundamental deviations, fit types (clearance, transition, interference), tolerance chain analysis.
⚡ Quick answer
INDUGRID provides 3 free Tolerances & Fits engineering calculators for professional use. ISO tolerance grades, fundamental deviations, fit types (clearance, transition, interference), tolerance chain analysis.
ISO Fit Calculator (Hole Basis)
Calculate upper and lower deviations, actual dimensions and fit type for standard ISO 286-1 toleranc…
EI = 0 (H-basis) | ES = EI + IT_grade | Clearance = ei - ES | Interference = EI - es
Tolerance Stack-up Analysis
Calculate worst-case and statistical (RSS) tolerance stack-up for linear dimension chains with up to…
WC: T_total = sum(Ti) | RSS: T_total = sqrt(sum(Ti^2))
Surface Roughness Conversion
Convert between Ra, Rz, Rmax and CLA (Centre Line Average) surface roughness values, and find corres…
Rz approx 4-7 x Ra | N-grade: N1=Ra0.025, N2=Ra0.05, N3=Ra0.1, N4=Ra0.2, N5=Ra0.4, N6=Ra0.8, N7=Ra1.6, N8=Ra3.2, N9=Ra6.3