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Potatoes and carrots take about 25 to 35 minutes in the oven at 425°F when cut into bite-sized pieces.
If you’ve been wondering how long potatoes and carrots take in the oven, the answer depends on a few factors like cut size, temperature, and whether you’re roasting them together or separately.
Both veggies are root vegetables, so they have a similar density and roast beautifully side by side on the same sheet pan.
In this post, we’ll break down exactly how long potatoes and carrots take in the oven, plus tips for getting them perfectly tender and caramelized every time.
Let’s dive in.
How Long Do Potatoes and Carrots Take in the Oven?
Potatoes and carrots take roughly 25 to 35 minutes in the oven when roasted at 425°F.
That said, the exact time depends on how you cut them.
1. Cubed Potatoes and Carrots: 25 to 30 Minutes
If you cut both potatoes and carrots into 1-inch cubes, they’ll roast in about 25 to 30 minutes.
This is the most common way to prepare them because the uniform size helps everything cook evenly.
Smaller cubes cook faster, so if you go with half-inch pieces, start checking at the 20-minute mark.
2. Wedges or Thick Chunks: 35 to 45 Minutes
Larger wedges or chunky pieces take longer, usually 35 to 45 minutes.
Potato wedges and thick carrot sticks need more time because the heat has to penetrate deeper into the vegetable.
Flip them halfway through so both sides get that golden, crispy edge.
3. Whole Baby Potatoes and Carrots: 40 to 50 Minutes
If you’re roasting whole baby potatoes and whole carrots, plan for 40 to 50 minutes.
Whole carrots especially take a while since they’re dense and thick at the top.
You can speed things up by parboiling them for 5 to 7 minutes before they go in the oven.
Factors That Affect How Long Potatoes and Carrots Take in the Oven
Several things influence how long potatoes and carrots take in the oven, and knowing them helps you nail the timing every single time.
1. Oven Temperature
Most recipes call for 400°F to 425°F for roasting potatoes and carrots.
At 400°F, expect them to take closer to 35 to 40 minutes.
At 425°F, you’re looking at 25 to 35 minutes for cubed pieces.
Higher heat gives you crispier edges, while lower heat cooks them more gently.
2. Cut Size and Uniformity
The single biggest factor in how long potatoes and carrots take in the oven is how you cut them.
Uneven pieces mean some bits burn while others stay raw.
Aim for uniform pieces about 1 inch thick for the most predictable results.
3. Type of Potato
Russet potatoes tend to soften faster than waxy varieties like red or Yukon Gold.
Waxy potatoes hold their shape better and may need a few extra minutes to get tender inside.
Either way, the difference is usually only 5 minutes or so.
4. Pan Spacing and Crowding
If you pile potatoes and carrots too close together, they steam instead of roast.
That means they’ll take longer and won’t get those crispy browned edges.
Spread them in a single layer with a little space between each piece.
How to Roast Potatoes and Carrots Perfectly
Getting the timing right is one thing, but nailing the technique is what makes them taste amazing.
1. Preheat to 425°F
A hot oven is key for roasting potatoes and carrots.
Let it preheat fully for at least 15 minutes before the pan goes in.
2. Toss With Oil and Seasonings
Coat the veggies with 2 to 3 tablespoons of olive oil.
Then season with salt, pepper, garlic powder, and rosemary or thyme.
The oil helps them brown and keeps them from drying out.
3. Spread in a Single Layer
Use a large sheet pan and spread everything out evenly.
Crowding is the enemy of crispy roasted vegetables.
4. Flip Halfway Through
Around the 15-minute mark, stir or flip the pieces with a spatula.
This ensures even browning on all sides.
5. Check for Doneness
Potatoes and carrots are done when a fork slides in easily with no resistance.
If they’re still firm, give them another 5 minutes and check again.
Can You Roast Potatoes and Carrots Together?
Yes, you can roast potatoes and carrots together on the same pan.
They have similar cook times when cut to the same size, which makes them a perfect pair.
Just make sure both are cut into uniform 1-inch pieces so they finish at the same time.
If your carrots are thicker than your potatoes, cut the carrots a bit smaller.
The goal is to have every piece done at the same moment.
So, How Long Do Potatoes and Carrots Take in the Oven?
Potatoes and carrots take about 25 to 35 minutes in the oven at 425°F when cut into 1-inch pieces.
Larger cuts take longer, and whole baby potatoes and carrots can take up to 50 minutes.
The key is uniform cutting, a hot oven, and enough space on the pan for everything to roast instead of steam.
Now you know exactly how long potatoes and carrots take in the oven, so you can get them perfectly tender and golden every single time.