🔧 PRECISION TOLERANCE ENGINEER ISO 286 | 10-in-1

⭐ Presets:
ISO 286 focusedCalculations use ISO-style tolerance grades, basic deviations, and fit classification for engineering reference.
Tool-first homepageThe calculator remains the first working section, with presets, thermal correction, gauge values, probability, and export tools intact.
Review-ready supportPrivacy, cookie, editorial, disclaimer, and contact pages are available from every page with one public email: support@tolerancecalculator.online.
📏 Basic inputsⓘ
📊 Fit results
Hole: --Shaft: --
Fit type:--
💰 Cost level:--
🔧 Surface & process:--
📐 MMC / LMC & Gauge designⓘ
Hole MMC: -- | LMC: --
Shaft MMC: -- | LMC: --
🔩 Limit gauges: --
📈 Probabilistic analysis (99.7% range)ⓘ
μ = -- mm, σ = -- mm
99.7% clearance range: --
⚠️ Estimation based on tolerance bands (6σ). For reference only.
🌡️ Thermal correctionⓘ
🌡️ Thermal expansion effect: --
Corrected fit at temp: --
⚙️ Recommendation engine (ISO fit advisor)ⓘ
Based on load type: click "Suggest fit"

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📐 Material Library
Aluminum / Stainless Steel Titanium / Magnesium Alloys Engineering Plastics Brass / Bronze Special Die Steel
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CMM Inspection
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Tolerance
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Engineering Guides And Fit Selection Resources

Original tolerance content for designers, machinists, and quality teams

Use the calculator first

Start with the tool above to calculate the exact upper and lower deviations for your selected hole and shaft codes. The articles below explain how to interpret the result.

Open all guides

Keep assumptions visible

Fit decisions should include material, operating temperature, surface finish, assembly method, and inspection plan. This helps avoid hidden manufacturing disputes.

Review data sources

27 original tolerance articles

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