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Tools & Calculators
Interactive calculators, selectors, and planners for knife sharpening and buying decisions.
Edge Angle Calculator
Compute per‑side and inclusive bevel angles from simple measurements.
Sharpening Schedule
Get a personalized hone/strop/sharpen cadence based on usage and steel.
Grit Progression Planner
Plan your sharpening sequence and strokes per side for your stones.
Blade Length Converter
Convert inches ↔ centimeters and see typical uses by size.
Steel Selector
Set priorities and find the best steel for your needs.
Steel Explorer
Filter steels by HRC, edge, corrosion, toughness; see details.
Knife Laws Map
Interactive US map with state summaries, thresholds, and sources.
Blade Legality Checker
Check likely legality by state, type, length, and carry mode.
Embed Docs
Parameters and examples for embedding calculators and widgets.
Embeddable Widgets
Steel Card
Single steel at‑a‑glance (HRC, edge, corrosion, toughness, notes).
Steel Compare Mini
Two‑steel side‑by‑side: HRC, edge retention, corrosion, toughness.
Top 3 Picks
Category‑aware top three products, dynamic pricing and CTAs.
Deal Under $X
Best current value under your budget cap.
Care Tip of the Day
Daily rotating micro‑tip that links to the care guide.
Sharpening Step Today
Next grit and technique snippet with CTAs.
Knife Tools & Calculators | Free Tools | knifys | Guest Checkout