Tools comparison
Jointer vs Planer: Flattening Lumber Correctly
Compare jointers and planers for flattening boards, parallel faces, rough lumber prep, cost, shop space, and milling workflow.
Verdict
Quick answer
Use a jointer to create one flat face and one square edge. Use a planer to make the opposite face parallel and bring boards to final thickness.
Ratings
Strength, durability, moisture, and workability.
Side by side
Comparison table
| Factor | Jointer | Planer |
|---|---|---|
| First reference | Creates flat reference face | Needs a reference face |
| Thickness | Not for final thickness alone | Excellent for thickness |
| Edge jointing | Excellent | Not the main job |
| Cost | Medium to high | Medium to high |
| Best workflow | Before planer | After jointer |
Key differences
What changes in the real project?
Jointer vs Planer
Jointer: Creates flat reference face
Planer: Needs a reference face
Jointer vs Planer
Jointer: Not for final thickness alone
Planer: Excellent for thickness
Jointer vs Planer
Jointer: Excellent
Planer: Not the main job
Jointer vs Planer
Jointer: Medium to high
Planer: Medium to high
Pros and cons
Tradeoffs by option.
Jointer pros
- Best fit for flattening one face, straightening one edge, and preparing rough stock reference surfaces
- First reference: Creates flat reference face
- Thickness: Not for final thickness alone
- Edge jointing: Excellent
- Clear choice when the project is designed around Jointer.
Jointer cons
- Can be the wrong choice when the job is closer to thicknessing boards, making faces parallel, and batch dimensioning lumber.
- Requires checking real stock, tool setup, installation conditions, and finish expectations.
- May cost more in rework if chosen only because Jointer is familiar.
- Compare against Planer with the actual measurements before buying.
Planer pros
- Best fit for thicknessing boards, making faces parallel, and batch dimensioning lumber
- First reference: Needs a reference face
- Thickness: Excellent for thickness
- Edge jointing: Not the main job
- Clear choice when the project is designed around Planer.
Planer cons
- Can be the wrong choice when the job is closer to flattening one face, straightening one edge, and preparing rough stock reference surfaces.
- Requires checking real stock, tool setup, installation conditions, and finish expectations.
- May cost more in rework if chosen only because Planer is familiar.
- Compare against Jointer with the actual measurements before buying.
Pricing
Cost comparison
Jointer
Medium to high
Planer
Medium to high
Applications
Common applications
Use Jointer for
flattening one face, straightening one edge, and preparing rough stock reference surfaces.
Use Planer for
thicknessing boards, making faces parallel, and batch dimensioning lumber.
Maintenance
Maintenance and long-term fit
Do not compare only sticker price or the first setup step. Compare the whole workflow: measuring, buying, cutting, installing, finishing, revising, maintaining, and repairing the result. A cheaper or faster option can still lose if it creates more waste, harder cuts, weaker fastening, worse appearance, or more rework after the first mistake.
Plan the work after choosing
Once you choose between Jointer and Planer, run your own numbers. WoodCutTool calculators and apps help turn the comparison into a cut list, sheet count, material estimate, or project record before you buy or cut.
Internal links
Related calculators and articles
FAQ
Common questions
Which is better: Jointer or Planer?
Use a jointer to create one flat face and one square edge. Use a planer to make the opposite face parallel and bring boards to final thickness.
When should I choose Jointer?
Choose Jointer for flattening one face, straightening one edge, and preparing rough stock reference surfaces.
When should I choose Planer?
Choose Planer for thicknessing boards, making faces parallel, and batch dimensioning lumber.
What should I compare before buying?
Compare the real project constraints: material, tool access, installation conditions, finish quality, waste, cost, and the ability to revise the plan before work starts.
Which WoodCutTool page should I use next?
Use the linked calculator, template, app, or learn guide on this page to test the decision with your own measurements instead of relying on a generic rule.